<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 商品table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="90px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showListEditDialog(scope.row.goods_id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
    <!-- 编辑商品对话框 -->
    <el-dialog title="修改商品信息" :visible.sync="editListDialogVisible" @close="editListDialogClosed">
      <el-form :model="editListForm" :rules="editListRules" ref="editListFormRef">
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editListForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="价格" prop="goods_price">
          <el-input v-model="editListForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="数量" prop="goods_number">
          <el-input v-model="editListForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="重量" prop="goods_weight">
          <el-input v-model="editListForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editListDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editList">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10,
      },
      // 商品列表
      goodsList: [],
      // 总数据条数
      total: 0,
      // 控制编辑商品列表对话框的显示与隐藏
      editListDialogVisible: false,
      // 商品列表参数验证规则
      editListRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '价格', trigger: 'blur' }],
        goods_number: [{ required: true, message: '数量', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '重量', trigger: 'blur' }],
      },
      // 商品列表表单数据对象
      editListForm: {},
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: result } = await this.$http.get('goods', {
        params: this.queryInfo,
      })
      if (result.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }
      // this.$message.success('获取商品列表成功！')
      console.log(result.data)
      this.goodsList = result.data.goods
      this.total = result.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    async removeById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }).catch((error) => error)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      const { data: result } = await this.$http.delete(`goods/${id}`)
      if (result.meta.status !== 200) {
        return this.$message.error('删除失败！')
      }
      this.$message.success('删除成功！')
      this.getGoodsList()
    },
    goAddPage() {
      this.$router.push('/goods/add')
    },

    // 显示编辑对话框
    async showListEditDialog(id) {
      const { data: res } = await this.$http.get('goods/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取商品信息失败！')
      this.editListForm = res.data
      this.editListDialogVisible = true
    },

    // 编辑商品信息提交
    editList() {
      // 先进行预验证
      this.$refs.editListFormRef.validate(async (valid) => {
        // console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.put('goods/' + this.editListForm.goods_id, this.editListForm)
        // console.log(res)

        if (res.meta.status !== 200) {
          return this.$message.error('修改商品信息失败')
        }
        this.$message.success('修改商品信息成功')
        this.getGoodsList()
        this.editListDialogVisible = false
      })
    },
    // 对话框关闭重置表单
    editListDialogClosed() {
      this.$refs.editListFormRef.resetFields()
    },
  },
}
</script>

<style scoped>
  .el-table{
    margin-top: 18px;
  }
</style>